Characteristics of balance performance in the Chinese elderly by age and gender

BMC Geriatrics

Table 3 Static balance in the elderly by age

Age (yrs)	n	I 1		I 2		I 3		I 4
Age (yrs)	n	n	%	n	%	n	%	n	%
60-	511	490	95.9^a _A	492	96.3^a _A	487	95.3^a _A	454	88.8^a _B
65-	530	502	94.7^ab_A	500	94.3^a _A	498	94.0^a _A	446	84.2^a _B
70-	378	352	93.1^ab_A	356	94.2^ab_A	342	90.5^ab_A	287	75.9^b _B
75-	297	266	89.6^bc_A	261	87.9^bc_A	248	83.5^bc_A	187	63.0^c _B
80-	165	138	83.6^cd_A	132	80.0^cd_A	121	73.3^cd_A	92	55.8^c _B
85–97	103	78	75.7^d _A	74	71.8^d _A	62	60.2^d _A	37	35.9^d _B
Total	1984	1826	92.0 _A	1815	91.5 _A	1758	88.6 _B	1503	75.8 _C
χ²		71.9		108.0		167.3		219.4
P		<0.0001		<0.0001		<0.0001		<0.0001

Superscript lowercase letters (a, b, c, etc) indicated multiple comparison results among various age groups. Subscript capital letters (A, B, C, etc) indicated multiple comparison results between items. Same letters indicated non-significant difference, different letters indicated significant differences in statistics. Significance level was 0.05

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